1 (*********************************************************************************************************************************)
4 (* This module is the "top level" for extraction *)
6 (*********************************************************************************************************************************)
8 Require Import Coq.Strings.Ascii.
9 Require Import Coq.Strings.String.
10 Require Import Coq.Lists.List.
12 Require Import Preamble.
13 Require Import General.
15 Require Import NaturalDeduction.
17 Require Import HaskKinds.
18 Require Import HaskLiteralsAndTyCons.
19 Require Import HaskCoreVars.
20 Require Import HaskCoreTypes.
21 Require Import HaskCore.
22 Require Import HaskWeakVars.
23 Require Import HaskWeakTypes.
24 Require Import HaskWeak.
25 Require Import HaskStrongTypes.
26 Require Import HaskStrong.
27 Require Import HaskProof.
28 Require Import HaskCoreToWeak.
29 Require Import HaskWeakToStrong.
30 Require Import HaskStrongToProof.
31 Require Import HaskProofToLatex.
32 Require Import HaskStrongToWeak.
33 Require Import HaskWeakToCore.
34 Require Import HaskProofToStrong.
36 Require Import HaskFlattener.
38 Open Scope string_scope.
39 Extraction Language Haskell.
41 (*Extract Inductive vec => "([])" [ "([])" "(:)" ].*)
42 (*Extract Inductive Tree => "([])" [ "([])" "(:)" ].*)
43 (*Extract Inlined Constant map => "Prelude.map".*)
45 (* I try to reuse Haskell types mostly to get the "deriving Show" aspect *)
46 Extract Inductive option => "Prelude.Maybe" [ "Prelude.Just" "Prelude.Nothing" ].
47 Extract Inductive list => "([])" [ "([])" "(:)" ].
48 Extract Inductive string => "Prelude.String" [ "[]" "(:)" ].
49 Extract Inductive prod => "(,)" [ "(,)" ].
50 Extract Inductive sum => "Prelude.Either" [ "Prelude.Left" "Prelude.Right" ].
51 Extract Inductive sumbool => "Prelude.Bool" [ "Prelude.True" "Prelude.False" ].
52 Extract Inductive bool => "Prelude.Bool" [ "Prelude.True" "Prelude.False" ].
53 Extract Inductive unit => "()" [ "()" ].
54 Extract Inlined Constant string_dec => "(==)".
55 Extract Inlined Constant ascii_dec => "(==)".
57 Extract Inductive ascii => "Char" [ "you_forgot_to_patch_coq" ] "you_forgot_to_patch_coq".
58 Extract Constant zero => "'\000'".
59 Extract Constant one => "'\001'".
60 Extract Constant shift => "shiftAscii".
62 Unset Extraction Optimize.
63 Unset Extraction AutoInline.
65 Variable Name : Type. Extract Inlined Constant Name => "Name.Name".
66 Variable mkSystemName : Unique -> string -> nat -> Name.
67 Extract Inlined Constant mkSystemName =>
68 "(\u s d -> Name.mkSystemName u (OccName.mkOccName (OccName.varNameDepth (nat2int d)) s))".
69 Variable mkTyVar : Name -> Kind -> CoreVar.
70 Extract Inlined Constant mkTyVar => "(\n k -> Var.mkTyVar n (kindToCoreKind k))".
71 Variable mkCoVar : Name -> CoreType -> CoreType -> CoreVar.
72 Extract Inlined Constant mkCoVar => "(\n t1 t2 -> Var.mkCoVar n (Coercion.mkCoKind t1 t2))".
73 Variable mkExVar : Name -> CoreType -> CoreVar.
74 Extract Inlined Constant mkExVar => "Id.mkLocalId".
77 Context (ce:@CoreExpr CoreVar).
79 Definition Γ : TypeEnv := nil.
81 Definition Δ : CoercionEnv Γ := nil.
83 Definition φ : TyVarResolver Γ :=
84 fun cv => Error ("unbound tyvar: " +++ toString (cv:CoreVar)).
85 (*fun tv => error ("tried to get the representative of an unbound tyvar:" +++ (getCoreVarOccString tv)).*)
87 Definition ψ : CoVarResolver Γ Δ :=
88 fun cv => Error ("tried to get the representative of an unbound covar!" (*+++ (getTypeVarOccString cv)*)).
90 (* We need to be able to resolve unbound exprvars, but we can be sure their types will have no
91 * free tyvars in them *)
92 Definition ξ (cv:CoreVar) : LeveledHaskType Γ ★ :=
93 match coreVarToWeakVar cv with
94 | WExprVar wev => match weakTypeToTypeOfKind φ wev ★ with
95 | Error s => Prelude_error ("Error converting weakType of top-level variable "+++
96 toString cv+++": " +++ s)
99 | WTypeVar _ => Prelude_error "top-level xi got a type variable"
100 | WCoerVar _ => Prelude_error "top-level xi got a coercion variable"
103 Definition header : string :=
104 "\documentclass{article}"+++eol+++
105 "\usepackage{amsmath}"+++eol+++
106 "\usepackage{amssymb}"+++eol+++
107 "\usepackage{proof}"+++eol+++
108 "\usepackage{trfrac} % http://www.utdallas.edu/~hamlen/trfrac.sty"+++eol+++
109 "\def\code#1#2{\Box_{#1} #2}"+++eol+++
110 "\usepackage[paperwidth=\maxdimen,paperheight=\maxdimen]{geometry}"+++eol+++
111 "\usepackage[tightpage,active]{preview}"+++eol+++
112 "\begin{document}"+++eol+++
113 "\setlength\PreviewBorder{5pt}"+++eol.
115 Definition footer : string :=
116 eol+++"\end{document}"+++
119 (* core-to-string (-dcoqpass) *)
120 Definition coreToStringExpr' (ce:@CoreExpr CoreVar) : ???string :=
121 addErrorMessage ("input CoreSyn: " +++ toString ce)
122 (addErrorMessage ("input CoreType: " +++ toString (coreTypeOfCoreExpr ce)) (
123 coreExprToWeakExpr ce >>= fun we =>
124 addErrorMessage ("WeakExpr: " +++ toString we)
125 ((addErrorMessage ("CoreType of WeakExpr: " +++ toString (coreTypeOfCoreExpr (weakExprToCoreExpr we)))
126 ((weakTypeOfWeakExpr we) >>= fun t =>
127 (addErrorMessage ("WeakType: " +++ toString t)
128 ((weakTypeToTypeOfKind φ t ★) >>= fun τ =>
129 addErrorMessage ("HaskType: " +++ toString τ)
130 ((weakExprToStrongExpr Γ Δ φ ψ ξ (fun _ => false) τ nil we) >>= fun e =>
131 OK (eol+++eol+++eol+++
132 "\begin{preview}"+++eol+++
134 toString (nd_ml_toLatexMath (@expr2proof _ _ _ _ _ _ e))+++
136 "\end{preview}"+++eol+++eol+++eol)
139 Definition coreToStringExpr (ce:@CoreExpr CoreVar) : string :=
140 match coreToStringExpr' ce with
142 | Error s => Prelude_error s
145 Definition coreToStringBind (binds:@CoreBind CoreVar) : string :=
147 | CoreNonRec _ e => coreToStringExpr e
148 | CoreRec lbe => fold_left (fun x y => x+++eol+++eol+++y) (map (fun x => coreToStringExpr (snd x)) lbe) ""
151 Definition coqPassCoreToString (lbinds:list (@CoreBind CoreVar)) : string :=
153 (fold_left (fun x y => x+++eol+++eol+++y) (map coreToStringBind lbinds) "")
157 (* core-to-core (-fcoqpass) *)
160 Definition mkWeakTypeVar (u:Unique)(k:Kind) : WeakTypeVar :=
161 weakTypeVar (mkTyVar (mkSystemName u "tv" O) k) k.
162 Definition mkWeakCoerVar (u:Unique)(k:Kind)(t1 t2:WeakType) : WeakCoerVar :=
163 weakCoerVar (mkCoVar (mkSystemName u "cv" O) (weakTypeToCoreType t1) (weakTypeToCoreType t2)) k t1 t2.
164 Definition mkWeakExprVar (u:Unique)(t:WeakType) : WeakExprVar :=
165 weakExprVar (mkExVar (mkSystemName u "ev" O) (weakTypeToCoreType t)) t.
167 Context (hetmet_brak : WeakExprVar).
168 Context (hetmet_esc : WeakExprVar).
169 Context (uniqueSupply : UniqSupply).
171 Definition useUniqueSupply {T}(ut:UniqM T) : ???T :=
174 f uniqueSupply >>= fun x => OK (snd x)
177 Definition larger : forall ln:list nat, { n:nat & forall n', In n' ln -> gt n n' }.
183 destruct IHln as [n pf].
184 exists (plus (S n) a).
188 fold (@In _ n' ln) in H.
193 Definition FreshNat : @FreshMonad nat.
194 refine {| FMT := fun T => nat -> prod nat T
200 set (larger tl) as q.
201 destruct q as [n' pf].
207 refine {| returnM := fun a (v:a) => _ |}.
208 intro n. exact (n,v).
211 destruct q as [n' v].
216 Definition unFresh {T} : @FreshM _ FreshNat T -> T.
225 Definition coreVarToWeakExprVarOrError cv :=
226 match coreVarToWeakVar cv with
228 | _ => Prelude_error "IMPOSSIBLE"
231 Definition curry {Γ}{Δ}{a}{s}{Σ}{lev} :
233 [ Γ > Δ > Σ |- [a ---> s @@ lev ] ]
234 [ Γ > Δ > Σ,,[a @@ lev] |- [ s @@ lev ] ].
235 eapply nd_comp; [ idtac | eapply nd_rule; apply (@RApp Γ Δ Σ [a@@lev] a s lev) ].
236 eapply nd_comp; [ apply nd_rlecnac | idtac ].
243 Definition fToC1 {Γ}{Δ}{a}{s}{lev} :
244 ND Rule [] [ Γ > Δ > [ ] |- [a ---> s @@ lev ] ] ->
245 ND Rule [] [ Γ > Δ > [a @@ lev] |- [ s @@ lev ] ].
249 eapply nd_comp; [ idtac | eapply nd_rule; eapply RArrange; apply RCanL ].
253 Definition fToC2 {Γ}{Δ}{a1}{a2}{s}{lev} :
254 ND Rule [] [ Γ > Δ > [] |- [a1 ---> (a2 ---> s) @@ lev ] ] ->
255 ND Rule [] [ Γ > Δ > [a1 @@ lev],,[a2 @@ lev] |- [ s @@ lev ] ].
269 Section coqPassCoreToCore.
271 (hetmet_brak : CoreVar)
272 (hetmet_esc : CoreVar)
273 (uniqueSupply : UniqSupply)
274 (lbinds:list (@CoreBind CoreVar))
275 (hetmet_PGArrowTyCon : TyFun)
276 (hetmet_pga_id : CoreVar)
277 (hetmet_pga_comp : CoreVar)
278 (hetmet_pga_first : CoreVar)
279 (hetmet_pga_second : CoreVar)
280 (hetmet_pga_cancell : CoreVar)
281 (hetmet_pga_cancelr : CoreVar)
282 (hetmet_pga_uncancell : CoreVar)
283 (hetmet_pga_uncancelr : CoreVar)
284 (hetmet_pga_assoc : CoreVar)
285 (hetmet_pga_unassoc : CoreVar)
286 (hetmet_pga_copy : CoreVar)
287 (hetmet_pga_drop : CoreVar)
288 (hetmet_pga_swap : CoreVar)
289 (hetmet_pga_applyl : CoreVar)
290 (hetmet_pga_applyr : CoreVar)
291 (hetmet_pga_curryl : CoreVar)
292 (hetmet_pga_curryr : CoreVar)
295 Definition ga_unit TV : RawHaskType TV ★ := @TyFunApp TV UnitTyCon nil ★ TyFunApp_nil.
296 Definition ga_prod TV (a b:RawHaskType TV ★) : RawHaskType TV ★ :=
297 TApp (TApp (@TyFunApp TV PairTyCon nil _ TyFunApp_nil) a) b.
298 Definition ga_type {TV}(a:RawHaskType TV ECKind)(b c:RawHaskType TV ★) : RawHaskType TV ★ :=
299 TApp (TApp (TApp (@TyFunApp TV
301 nil _ TyFunApp_nil) a) b) c.
302 Definition ga := @ga_mk ga_unit ga_prod (@ga_type).
304 Definition ga_type' {Γ}(a:HaskType Γ ECKind)(b c:HaskType Γ ★) : HaskType Γ ★ :=
305 fun TV ite => TApp (TApp (TApp (@TyFunApp TV
307 nil _ TyFunApp_nil) (a TV ite)) (b TV ite)) (c TV ite).
309 Definition mkGlob2' {Γ}{κ₁}{κ₂}(f:HaskType Γ κ₁ -> HaskType Γ κ₂ -> HaskType Γ ★) :
310 IList Kind (fun κ : Kind => HaskType Γ κ) (κ₁::κ₂::nil) -> HaskType Γ ★.
317 Definition mkGlob2 {Γ}{Δ}{l}{κ₁}{κ₂}(cv:CoreVar)(f:HaskType Γ κ₁ -> HaskType Γ κ₂ -> HaskType Γ ★) x y
318 : ND Rule [] [ Γ > Δ > [] |- [f x y @@ l] ].
320 refine (@RGlobal Γ Δ l
321 {| glob_wv := coreVarToWeakExprVarOrError cv
322 ; glob_kinds := κ₁ :: κ₂ :: nil
323 ; glob_tf := mkGlob2'(Γ:=Γ) f
324 |} (ICons _ _ x (ICons _ _ y INil))).
327 Definition mkGlob3' {Γ}{κ₁}{κ₂}{κ₃}(f:HaskType Γ κ₁ -> HaskType Γ κ₂ -> HaskType Γ κ₃ -> HaskType Γ ★) :
328 IList Kind (fun κ : Kind => HaskType Γ κ) (κ₁::κ₂::κ₃::nil) -> HaskType Γ ★.
336 Definition mkGlob3 {Γ}{Δ}{l}{κ₁}{κ₂}{κ₃}(cv:CoreVar)(f:HaskType Γ κ₁ -> HaskType Γ κ₂ -> HaskType Γ κ₃ -> HaskType Γ ★) x y z
337 : ND Rule [] [ Γ > Δ > [] |- [f x y z @@ l] ].
339 refine (@RGlobal Γ Δ l
340 {| glob_wv := coreVarToWeakExprVarOrError cv
341 ; glob_kinds := κ₁ :: κ₂ :: κ₃ :: nil
342 ; glob_tf := mkGlob3'(Γ:=Γ) f
343 |} (ICons _ _ x (ICons _ _ y (ICons _ _ z INil)))).
346 Definition mkGlob4' {Γ}{κ₁}{κ₂}{κ₃}{κ₄}(f:HaskType Γ κ₁ -> HaskType Γ κ₂ -> HaskType Γ κ₃ -> HaskType Γ κ₄ -> HaskType Γ ★) :
347 IList Kind (fun κ : Kind => HaskType Γ κ) (κ₁::κ₂::κ₃::κ₄::nil) -> HaskType Γ ★.
356 Definition mkGlob4 {Γ}{Δ}{l}{κ₁}{κ₂}{κ₃}{κ₄}(cv:CoreVar)(f:HaskType Γ κ₁ -> HaskType Γ κ₂ -> HaskType Γ κ₃ -> HaskType Γ κ₄ -> HaskType Γ ★) x y z q
357 : ND Rule [] [ Γ > Δ > [] |- [f x y z q @@ l] ].
359 refine (@RGlobal Γ Δ l
360 {| glob_wv := coreVarToWeakExprVarOrError cv
361 ; glob_kinds := κ₁ :: κ₂ :: κ₃ :: κ₄ :: nil
362 ; glob_tf := mkGlob4'(Γ:=Γ) f
363 |} (ICons _ _ x (ICons _ _ y (ICons _ _ z (ICons _ _ q INil))))).
366 Definition gat {Γ}(x:Tree ??(HaskType Γ ★)) := @ga_mk_tree ga_unit ga_prod _ x.
368 Instance my_ga : garrow ga_unit ga_prod (@ga_type) :=
369 { ga_id := fun Γ Δ ec l a => mkGlob2 hetmet_pga_id (fun ec a => ga_type' ec a a) ec (gat a)
370 ; ga_cancelr := fun Γ Δ ec l a => mkGlob2 hetmet_pga_cancelr (fun ec a => ga_type' ec _ a) ec (gat a)
371 ; ga_cancell := fun Γ Δ ec l a => mkGlob2 hetmet_pga_cancell (fun ec a => ga_type' ec _ a) ec (gat a)
372 ; ga_uncancelr := fun Γ Δ ec l a => mkGlob2 hetmet_pga_uncancelr (fun ec a => ga_type' ec a _) ec (gat a)
373 ; ga_uncancell := fun Γ Δ ec l a => mkGlob2 hetmet_pga_uncancell (fun ec a => ga_type' ec a _) ec (gat a)
374 ; ga_assoc := fun Γ Δ ec l a b c => mkGlob4 hetmet_pga_assoc (fun ec a b c => ga_type' ec _ _) ec (gat a) (gat b) (gat c)
375 ; ga_unassoc := fun Γ Δ ec l a b c => mkGlob4 hetmet_pga_unassoc (fun ec a b c => ga_type' ec _ _) ec (gat a) (gat b) (gat c)
376 ; ga_swap := fun Γ Δ ec l a b => mkGlob3 hetmet_pga_swap (fun ec a b => ga_type' ec _ _) ec (gat a) (gat b)
377 ; ga_drop := fun Γ Δ ec l a => mkGlob2 hetmet_pga_drop (fun ec a => ga_type' ec _ _) ec (gat a)
378 ; ga_copy := fun Γ Δ ec l a => mkGlob2 hetmet_pga_copy (fun ec a => ga_type' ec _ _) ec (gat a)
379 ; ga_first := fun Γ Δ ec l a b x => fToC1 (mkGlob4 hetmet_pga_first (fun ec a b c => _) ec (gat a) (gat b) (gat x))
380 ; ga_second := fun Γ Δ ec l a b x => fToC1 (mkGlob4 hetmet_pga_second (fun ec a b c => _) ec (gat a) (gat b) (gat x))
381 ; ga_comp := fun Γ Δ ec l a b c => fToC2 (mkGlob4 hetmet_pga_comp (fun ec a b c => _) ec (gat a) (gat b) (gat c))
382 (* ; ga_lit := fun Γ Δ ec l a => nd_rule (RGlobal _ _ _ _ (coreVarToWeakExprVarOrError hetmet_pga_lit))*)
383 (* ; ga_curry := fun Γ Δ ec l a => nd_rule (RGlobal _ _ _ _ (coreVarToWeakExprVarOrError hetmet_pga_curry))*)
384 (* ; ga_apply := fun Γ Δ ec l a => nd_rule (RGlobal _ _ _ _ (coreVarToWeakExprVarOrError hetmet_pga_apply))*)
385 (* ; ga_kappa := fun Γ Δ ec l a => fToC1 (nd_rule (RGlobal _ _ _ _ (coreVarToWeakExprVarOrError hetmet_pga_kappa)))*)
386 ; ga_lit := fun Γ Δ ec l a => Prelude_error "ga_lit"
387 ; ga_curry := fun Γ Δ ec l a b c => Prelude_error "ga_curry"
388 ; ga_apply := fun Γ Δ ec l a b c => Prelude_error "ga_apply"
389 ; ga_kappa := fun Γ Δ ec l a => Prelude_error "ga_kappa"
392 Definition hetmet_brak' := coreVarToWeakExprVarOrError hetmet_brak.
393 Definition hetmet_esc' := coreVarToWeakExprVarOrError hetmet_esc.
395 Definition coreToCoreExpr' (ce:@CoreExpr CoreVar) : ???(@CoreExpr CoreVar) :=
396 addErrorMessage ("input CoreSyn: " +++ toString ce)
397 (addErrorMessage ("input CoreType: " +++ toString (coreTypeOfCoreExpr ce)) (
398 coreExprToWeakExpr ce >>= fun we =>
399 addErrorMessage ("WeakExpr: " +++ toString we)
400 ((addErrorMessage ("CoreType of WeakExpr: " +++ toString (coreTypeOfCoreExpr (weakExprToCoreExpr we)))
401 ((weakTypeOfWeakExpr we) >>= fun t =>
402 (addErrorMessage ("WeakType: " +++ toString t)
403 ((weakTypeToTypeOfKind φ t ★) >>= fun τ =>
405 ((weakExprToStrongExpr Γ Δ φ ψ ξ (fun _ => true) τ nil we) >>= fun e =>
407 (addErrorMessage ("HaskStrong...")
408 (let haskProof := flatten_proof my_ga (@expr2proof _ _ _ _ _ _ e)
409 in (* insert HaskProof-to-HaskProof manipulations here *)
410 OK ((@proof2expr nat _ FreshNat _ _ _ _ (fun _ => Prelude_error "unbound unique") _ haskProof) O)
412 (snd e') >>= fun e'' =>
413 strongExprToWeakExpr hetmet_brak' hetmet_esc' mkWeakTypeVar mkWeakCoerVar mkWeakExprVar uniqueSupply
416 OK (weakExprToCoreExpr q)
419 Definition coreToCoreExpr (ce:@CoreExpr CoreVar) : (@CoreExpr CoreVar) :=
420 match coreToCoreExpr' ce with
422 | Error s => Prelude_error s
425 Definition coreToCoreBind (binds:@CoreBind CoreVar) : @CoreBind CoreVar :=
427 | CoreNonRec v e => let e' := coreToCoreExpr e in CoreNonRec (setVarType v (coreTypeOfCoreExpr e')) e'
429 | CoreRec lbe => CoreRec (map (fun ve => match ve with (v,e) => (v,coreToCoreExpr e) end) lbe)
430 (* FIXME: doesn't deal with the case where top level recursive binds change type *)
432 match coreToCoreExpr (CoreELet lbe) (CoreELit HaskMachNullAddr) with
433 | CoreELet (CoreRec lbe') => lbe'
435 ("coreToCoreExpr was given a letrec, " +++
436 "but returned something that wasn't a letrec: " +++ toString x)
441 Definition coqPassCoreToCore' (lbinds:list (@CoreBind CoreVar)) : list (@CoreBind CoreVar) :=
442 map coreToCoreBind lbinds.
444 End coqPassCoreToCore.
446 Definition coqPassCoreToCore
447 (hetmet_brak : CoreVar)
448 (hetmet_esc : CoreVar)
449 (uniqueSupply : UniqSupply)
450 (lbinds:list (@CoreBind CoreVar))
451 (hetmet_PGArrowTyCon : TyFun)
452 (hetmet_pga_id : CoreVar)
453 (hetmet_pga_comp : CoreVar)
454 (hetmet_pga_first : CoreVar)
455 (hetmet_pga_second : CoreVar)
456 (hetmet_pga_cancell : CoreVar)
457 (hetmet_pga_cancelr : CoreVar)
458 (hetmet_pga_uncancell : CoreVar)
459 (hetmet_pga_uncancelr : CoreVar)
460 (hetmet_pga_assoc : CoreVar)
461 (hetmet_pga_unassoc : CoreVar)
462 (hetmet_pga_copy : CoreVar)
463 (hetmet_pga_drop : CoreVar)
464 (hetmet_pga_swap : CoreVar)
465 (hetmet_pga_applyl : CoreVar)
466 (hetmet_pga_applyr : CoreVar)
467 (hetmet_pga_curryl : CoreVar)
468 (hetmet_pga_curryr : CoreVar) : list (@CoreBind CoreVar) :=